General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Partial Shade to Full Shade
Soil pH Preferences: Moderately acid (5.6 – 6.0)
Minimum cold hardiness: Zone 3 -40 °C (-40 °F) to -37.2 °C (-35)
Maximum recommended zone: Zone 7a
Plant Height: 18 to 24 inches (45-60 cm)
Plant Spread: 18 to 24 inches (45-60 cm)
Flowers: Showy
Flower Color: Mauve
Bloom Size: 2"-3"
Flower Time: Summer
Propagation: Seeds: Suitable for wintersowing
Awards and Recognitions: RHS AGM

Common names
  • Japanese Wood Poppy
Botanical names
  • Accepted: Glaucidium palmatum
  • Synonym: Glaucidium palmatum var. leucanthum

  • Posted by CarolineScott (Calgary - Zone 4a) on Nov 1, 2014 9:41 AM concerning plant:
    Dr. Deno's research had this germinating in two weeks when GA-3 was used.
    An article in the NARGS Rock Garden quarterly Fall 1991 volume 49 #4 suggests a concentration of 500 ppm GA3.

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